169 	int r = -ENOMEM;  in alloc_area()  local
199 	return r;  in alloc_area()
286 	int r;  in area_io()  local
291 	r = chunk_io(ps, ps->area, chunk, rw, 0);  in area_io()
292 	if (r)  in area_io()
293 		return r;  in area_io()
310 	int r;  in read_header()  local
333 	r = alloc_area(ps);  in read_header()
334 	if (r)  in read_header()
335 		return r;  in read_header()
337 	r = chunk_io(ps, ps->header_area, 0, READ, 1);  in read_header()
338 	if (r)  in read_header()
350 		r = -ENXIO;  in read_header()
370 	r = dm_exception_store_set_chunk_size(ps->store, chunk_size,  in read_header()
372 	if (r) {  in read_header()
375 		return r;  in read_header()
378 	r = alloc_area(ps);  in read_header()
379 	return r;  in read_header()
383 	return r;  in read_header()
452 	int r;  in insert_exceptions()  local
483 		r = callback(callback_context, e.old_chunk, e.new_chunk);  in insert_exceptions()
484 		if (r)  in insert_exceptions()
485 			return r;  in insert_exceptions()
496 	int r, full = 1;  in read_exceptions()  local
538 			r = PTR_ERR(area);  in read_exceptions()
542 		r = insert_exceptions(ps, area, callback, callback_context,  in read_exceptions()
552 		if (unlikely(r))  in read_exceptions()
560 	r = 0;  in read_exceptions()
565 	return r;  in read_exceptions()
614 	int r, uninitialized_var(new_snapshot);  in persistent_read_metadata()  local
620 	r = read_header(ps, &new_snapshot);  in persistent_read_metadata()
621 	if (r)  in persistent_read_metadata()
622 		return r;  in persistent_read_metadata()
638 		r = write_header(ps);  in persistent_read_metadata()
639 		if (r) {  in persistent_read_metadata()
641 			return r;  in persistent_read_metadata()
646 		r = zero_disk_area(ps, 0);  in persistent_read_metadata()
647 		if (r)  in persistent_read_metadata()
649 		return r;  in persistent_read_metadata()
669 	r = read_exceptions(ps, callback, callback_context);  in persistent_read_metadata()
671 	return r;  in persistent_read_metadata()
769 	int r;  in persistent_prepare_merge()  local
782 		r = area_io(ps, READ);  in persistent_prepare_merge()
783 		if (r < 0)  in persistent_prepare_merge()
784 			return r;  in persistent_prepare_merge()
811 	int r, i;  in persistent_commit_merge()  local
819 	r = area_io(ps, WRITE_FLUSH_FUA);  in persistent_commit_merge()
820 	if (r < 0)  in persistent_commit_merge()
821 		return r;  in persistent_commit_merge()
853 	int r;  in persistent_ctr()  local
876 		r = -ENOMEM;  in persistent_ctr()
886 			r = -EINVAL;  in persistent_ctr()
900 	return r;  in persistent_ctr()
952 	int r;  in dm_persistent_snapshot_init()  local
954 	r = dm_exception_store_type_register(&_persistent_type);  in dm_persistent_snapshot_init()
955 	if (r) {  in dm_persistent_snapshot_init()
957 		return r;  in dm_persistent_snapshot_init()
960 	r = dm_exception_store_type_register(&_persistent_compat_type);  in dm_persistent_snapshot_init()
961 	if (r) {  in dm_persistent_snapshot_init()
965 		return r;  in dm_persistent_snapshot_init()
968 	return r;  in dm_persistent_snapshot_init()